Flexible tubing.



UNITED STATES PATENT oEEIcE.

AUGUSTUS W. WESSOLECK, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO THE AMERICAN HARDWARE CORPORATION, OF NEW BRITAIN, CONNECTICUT, A

CORPORATION OF CONNECTICUT.

FLEXIBLE TUBING.

Specification of Letters Patent.

Application led January 31, 1914. Serial No. 815,680.

case, guide and protect flexible transmission shafting, such for instance as is used connection with speedometers and the The invention refers more particularly to means for securely interlocking a sleeve member to one end of such a flexible tubing so that the two are rigidly interconnected.

The invention provides a specific means.

of interconnection which may be availed of at minimum expense and which will provide an efcient form of interconnection.

To this end the invention comprises the 'device described in detail in the following specification taken in connection with the` accompanying drawings and illustrating a preferable embodiment thereof.

In these drawings: Fi re 1 is a view in elevation of a flexible tu ing end having a sleeve coupled thereto in accordance with the present invention. Fig. 2 is a view in elevation of the sleeve member.. Fig. 3 is a view in elevation, partly in section, of one form of flexible tubing which may be used in connection with thev present invention. Figs. 4 and 5 are enlarged detail views illustrating. the specific form of interlocking means.

Referring to the drawings by numerals, 1

Vindicates a flexible inner tubing of the spiral type which maybe provided with a protecting rustless spiral tape 2 formingV an outer covering therefor. This is a well known and standard construction of flexible tubing well adapted to use in connection with the present interlockin means, although it will be understoo that other ends of the end sleeves of the flexible tubing are usually constructed and arranged for connection to the speedometer and pinion casings respectively, but under the present invention, the sleeve member is not limited to any specific form. It is, however, preferably constructed of metal which may be indented.

With the end of the tubing inserted within the sleeve member for a sufficient distance to give the requisite overall length, the sleeve member is placed beneath or between suitable punching dies which will give it a number of longitudinally extending indentations 4, and which will at the Sametime indent both the facing strip 2, should it be employed, and the flexible tubing 1 so that the tubing is provided with a recess and the sleeve with an indented rib extending into said recess and interlocking therewith. The shape of the indentations will, of course, be such as to provide locking abutment shoulders or sides to the recessed portion of the tubing, and the length of the indentations will be suchl as to bridge at least two adjacent coils of the spiral tube. These series of indentations 4 may extend about the sleeve 3 and may' be of any desired. number. It will be evident that by thus deforming the sleeve and providing it with a number of indentations which will penetrate into and indent these flexible tubing, and will extend across and bridge adjacent spiral coils thereof, the sleeve is firmly interlocked with the tubing and is held against either rotary or longitudinal movement relative thereto.

While I have herein described a preferable embodiment of my invention, I desire it understood that the same may be varied invstructure and in relative arrangement` of parts within the spirit of the invention .and the scope of the appended claims.

What I claim, therefore, and desire to secure by Letters Patent is:

1. In a device of the character described, a flexible spiral tubing, and a sleeve member inclosing one end of said tubing, said sleeve member and adjacent coils of said spiral tubing having corresponding interengaging and interlocking deformations, said deformations extending ongitudinally of the sleeve and tubing and transversely of at least two adjacent spiral coils.

2. In a device of the character described,

a spiral tubing, and a sleeve member inclosing one end of said tubing, said sleeve membeil having anindentation therein extending in a direction to bridge adjacent coils of said spiral tubing, said adjacent coils being pro` vided with corresponding,indentations interlocked with said sleeve indentation, said last named indentation interlocking said coils with each other and against relative movement.

3. In a device of the character described, a spiral tubing, and a sleeve member inclosing one end of said tubing, said member and adjacent coils of said tubing being provided with a series of spaced interlocking indentations, .said indentations extending transversely of adjacent coils of the tubing to interlock said coils With each other.

Li. in a device of the character described, a spiral tubing', and a sleeve member inclosing' one end of said tubing7 said member and adjacent coils of said tubing being provided with a series of spaced interlocking indentations, said indentations extending transversely of adjacent coils of the tubing to interlock said coils with each other and to said sleeve, said series of indentations extending around said sleeve.

` AUGUSTUS W. VVESSLECK. Witnesses:

R. J.. P. Nnss, R. LVGRANT. 

